Abrading machine



June 11, 1935. I wA 2,004,109

ABRADING MACHINE Filed 001'. 18, 1952 Patented June 11, 1935 UNITEDSTATES 2,004,109 v ABRADING MACHINE John B. Hadaway, Swampscott, Mass.,assignor to United Shoe Machinery Corporation, Paterson, N; J., acorporation of New Jersey Application October 18, 1932, SerialNo.638,281

13 Claims.

This application relates to abrading machines and is herein illustratedas embodied in a machine for roughening channels and channel flapsformed in shoe parts.

for example, Goodyear shoes, it is customary to produce a channel on thetread face of an outsole by cutting and raising a flap along the edgethereof, and to attach the outsole to the upper by a row of stitcheswhich pass through the bottom of this channel. The flap is then cementedto the channel to cover the stitches. However, before cementing the flapit is usual to perform a rubbing operation upon the stitches to causethem. to lie flat. This rubbing operation tends to glaze the surface ofthe channel and to pack down the fiber or" the leather so close as toprevent the adhesive gaining a proper hold of the leather on the channelflap and in the channel.

It is an object of the present invention to provide an improved machinefor roughening channels and channel flaps formed upon shoe parts tofacilitate the cementing of the flaps to the channels.

In accordance with a feature of the invention, the illustratedembodiment of the invention comprises a substantially cylindricalscouring tool for scouring channels and a conical scouring tool forsecuring channel flaps, both tools being mounted upon the same shaft. Inthe illustrated machine, the scouring tools of which consist of wirebrushes, the Work is guided to the tools by a gage which extends betweenthe cylindrical and the conical tools. The illustrated gage consists ofa thin blade-like member adapted to engage the shoulder of the channel,and thisgage is mounted for adjustment toward and from or transverselyof the shaft. The gage serves not only as abovestated to guide the workin relation to the scouring tools but also to limit the pressure betweenthe work and the tools, that is, to limit the extent to which the wirebristles of the roughening tools can be deformed under pressure of theWork.

A further feature of the invention consists of the provision of meansfor holding the relatively flexible flap against a roughening tool. Inthe illustrated machine the flap-holding means consists of afrusto-conical roll which engages the outside of the flap and which isresiliently pressed toward the roughening tool.

These and other features of the invention including certain details ofconstruction and. combinations of parts will be described in connectionwith the illustrated machine and pointed out in the appended claims.

In the manufacture of certain types of shoes,

Referring now to the accompanying drawing,

Fig. l is a view in front elevation of a machine in which the presentinvention is embodied showing the channel and the channel flap of anoutsole in the process of being roughened; and

Fig. 2 is a side elevation of the machine shown in Fig. l.

The supporting structure of the machineconsists of a hollow frame l6adapted to rest' upon the floor and to support a head 12 which carries apair of spaced bearings 14 for a shaft l8. Mounted upon the shaft I6 area pair of fixed and loose pulleys l3 and 20 respectively for engagementwith a driving belt 22. Adjacent to an end of the shaft It is afrusto-conical scouring brush 24 having wire bristles. Asubstantiallycylindrical scouring brush 26 also having wire bristles and of adiameter substantially equal to that of the large end of the brush 24 isalso mounted of the shaft IS. The brush 26 is spaced from the end of theshaft. [6 and is adjacent to but spaced a slight distance from the largeend of the brush 24. Extending into the space between the brushes 24 and26 is a gage which consists of a thin bladellke member 28. The upper endof the member 28 has formed in it a slot 29 through which extends aclamping screw 32 for clamping the member 28 to a bracket 30 which issecured on one of the bearings M. The member 28 curves downwardly andinwardly from its locality of at tachment to the bracket 30 so that thelower end of the member 28 is underneath the shaft l5 and between thebrushes 24 and 26. Thedistance between the lower end of the member 28andthe shaft IE5 can be adjusted by loosening the screw 32 and slidingthe member 28 up or down until the desired adjustment has I beenobtained, after which the screw 32 may be tightened. The bracket 30 issecured to the bearing M by a clamping screw 34 which extends through ahorizontal slot 36 formed in the bracket 31!. Interposed between thehead of the screw 34 and the bracket 30 is a washer 38. Such provisionfor horizontal adjustment of the bracket 33 enables the position of thegage member 28 to be adjusted in a direction lengthwise of the shaft l6for different combinations of scouring brushes.

In order to hold a relatively flexible channel flap against thefrusto-conical brush 24, there is provided a frusto-conical roll 40which engages the outside of the channelfiap and presses the flapagainst the brush 24. The roll 40 is mounted upon the end of a shaft42fwhich is journaled in bearings formed in a forked lever 46. The lever46 is journaled upon a. pin 48 carried in a bracket 50 which is securedto the head [2 of the machine. The lever 46 has a horizontally extendingbell crank arm 52. A rod 54 is pivotally connected at its upper end toan end of the arm 52, the lower end of the rod 54 being pivotallyconnected to an end of a lever 55 which is fulcrumed upon a pin 58secured in the head 12. The treadle rod 60 connects the lever 56 to atreadle 62 which is fulcrumed upon a pin 64 secured in the lower portionof the machine frame It]. Formed in the bracket 59 is a well 66 whichreceives and constitutes an abutment for the lower end of a coilcompression spring 68. An abutment m for the upper end of the spring 68is carried upon the lower end of a screw 72 which is threaded through alug "M formed in the bell crank arm 52. A head it upon the screw 16provides for'adjustment of the pressure of the spring 68. The approachof the roll 49 toward the scouring tool .24 is limited by a stop screwl8 which is threaded through a lug formed in the bracket 50. An end ofthe screw 78 engages a lug 82 formed upon the lever 46.

The operation of the above-described machine is illustrated in Fig. 1wherein is shown a lasted shoe S having formed in its outsole a channelC and a flap F. The operator presents the shoe to the machine with thebottom of the channel 0 engaging the brush 25 and the inner surface ofthe flap F engaging the brush 24. The gage member 28, by engagement withthe shoulder of the channel, as shown in Fig. 1, enables the operator toguide the shoe in proper relation to the scouring tools and it alsoserves to prevent excessive deformation of the bristles of the scouringtools, The roll Ml serves to hold the flexible flap F against the tool24. When the operation has been finished the operator depresses thetreadleEZ and thereby separates the roll Mi from the tool Z-to enablethe flap of a succeeding shoe to be presented to the tool 26. Hethereupon releases the treadlc 62 and repeats the operation with thesucceeding shoe.

Having described the invention, what I claim new and desire to secure byLetters Patent of the United States is:

1. A machine for scouring channels and channel flaps formed upon shoeparts, comprising a shaft, a substantially cylindrical scouring tool onsaid shaft for scouring channels, and a conical scouring tool on saidshaft adjacent to said cylindrical tool for scouring channel flaps.

2. A machine for scouring channels and channel flaps formed upon shoeparts, comprising a shaft, a substantially cylindrical wire brush onsaid shaft for scouring channels, and a frustoconical wire brush on saidshaft adjacent to said cylindrical brush for scouring channel flaps.

3. An abrading machine comprising a frame, a shaft carried thereby, apair of abrading tools mounted on said shaft, said abrading tools beingseparated from each other by a relatively narrow space, and a gagemounted on said frame independently of said shaft for guiding workpresented to said abrading tools, said gage extending into the spacebetween said abrading tools.

i. A machine forscouring channels and channel flaps formed upon shoeparts, comprising a substantially cylindrical wire brush, a frustoconical wire brush adjacent to said cylindrical brush, driving means forsaid brushes, and a gage positioned between said brushes for engagingthe shoulder between achannel flap and a channel formed on a shoe partto guide the shoe part with the channel flap in engagement with one ofsaid brushes and the channel in engagement with the other of saidbrushes.

5. A machine for scouring channels and channel flaps formed upon shoeparts comprising a shaft, a pair of wire brushes mounted upon said shaftadjacent to each other, one of said brushes being substantiallycylindrical for engagement with a channel and the other of said brushesbeing conical for engagement with a flap, and a thin blade-like gagemember interposed between said brushes for engagement with the shoulderof the channel to guide the shoe part upon which the channel and theflap are formed.

6. An abrading machine comprising a shaft, a pair of abrading toolsmounted on said shaft, a gage positioned between said abrading tools forguiding work, and supporting means for said gage constructed andarranged to enable said gage to be adjusted toward and from said shaft.

'2. A machine for scouring channels and channel flaps formed on. shoeparts, comprising means for scouring simultaneously a channel and achannel flap formed on a shoe part and means for holding the channelflap against said scouring means while the channel is presented to saidscouring means.

8. A machine for scouring channels and channel flaps formed on shoeparts, comprising a shaft, a substantially cylindrical wire brush onsaid shaft, a frusto-conical wire brush on said shaft adjacent to saidcylindrical brush, and 7 means for pressing a channel flap on a shoepart against said frusto-conical brush while the channel of the shoepart is presented to said cylindrical brush.

9. A machine for scouring channels flaps formed upon shoe parts,comprising a frustoconical scouring brush and a roll constructed andarranged to press a channel flap against said scouring brush.

10. A machine for securing channel flaps formed ,upon shoe parts,comprising a frustoconical scouring brush, a frusto-conical roll, andresilient means acting upon said roll to cause said roll to press achannel flap against said scouring brush.

11. A machine for scouring channels and channel flaps formed on shoeparts, comprising a plurality of wire bristles constructed and arrangedto scour simultaneously a channel and a channel flap formed on a shoepart, a roll engageable with the channel flap, a pivotal support forsaid roll, a spring acting upon said support to cause said roll to pressthe channel flap against said scouring bristles, and operator controlledmeans for separating said roll and said scouring bristles to facilitatethe introduction of a channel fiap'therebetween.

12. A machine for scouring channel flaps 0n shoe soles comprising ascouring tool constructed and arranged to operate upon the inner surfaceof an upturned channel flap, and a gage engageable with the shoulder ofthe channel for controlling the presentation of the flap to saidscouring tool.

13. A machine for scouring channel flaps on shoe soles comprising ascouring tool constructed and arranged to operate upon one surface of achannel flap, and means engageable with the opposite surface of the flapto hold the flap against said scouring tool.

JOHN BoHADAWAYb

